Elevator



(No-Model.) 3 Sheets-Sheefl.

" E. .J. STELLWAGEN.

ELEVATOR.

No. 882,841. f Patented May 15, 1888.

' WITNESSES.

N, PETERS. Phulo-Lilhagraphur, Washinglen. D C

(No Modei.) 3 Sheets-+Sheet 2.

E. J. STELLWAGEN] ELEVATOR.

No. 382,841. Pa,tentdMay 15, 1888.

I 22 420. WITNESSES N, PETERSv Pholu-Uthugmphcn Washington, DJ-

a Sheets-Sheet 3.

Patentd May 15, 1888;

E. J. STELLWAGEN.

. (No Model.)

I ttorney/ WITNESSES.

UNITED, STATES PATENT OFFICE.

EDWARD J. STELLIVAGEN, OF WASHINGTON, DISTRICT OF COLUMBIA.

ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 382,841, dated May 15,1888.

Application filed January 4, I888. Serial No. 259,771. (No model.)

To all whom it may concern.-

Beit known that I, EDWARD J. STELLWAGEN, of NVashington, in the Districtof Columbia, have invented certain new and useful Improvements inElevators, of which the following is a specification.

The object of my invention is to produce an elevator cheap inconstruction and economical in operation, and specially designed for usein dwellings and other small buildings where convenience and not speedand facility of manipulation is the prime requisite, though I do notlimit the invention and its new principles of operation to anyparticular class of elevators.

The general operation is as follows: A heavy counter-balance Weightmoving upon an adjnstable inclined plane furnishes the power by whichthe elevatorcar is raised and its descent permitted. A change of angleof theinclined plane causes the weight to exert a variable stress on thecable. Thus ,if the plane be raised to a nearly horizontal position, theweight of the car would be sufficient to roll the weight upon the planeand the car would descend. If the plane is placed at agreaterinclination,the

weight would by its gravity roll down the plane and elevate the car.

With this general statement, I will now describe one constructionembodying the ideas of my invention.

In the accompanying drawings, Figurel represents a general side view ofthe car and inclined plane; Fig. 2, a similar view from another side.Fig. 3 is a view showing the top of the car with the beams, sheaves, andbrake apparatus as seen from above. Fig. lisa detail view of a device bymeans of which the motion of the car is retarded; Fig. 5, a detail viewof the counter-weight which rolls on the inclined plane.- Figs. 6, 7,and 8 are views of the main sheave and brake-wheel, showing theiroperation. Fig. 9 shows the Y,in which the shaft supporting the inclinedplane rests. Fig. 10 is a view of part of a rail forming the inclinedplane, showing the place where the pivot-shaft passes through; and Fig.11, a detail sectional view on the line a: w of Fig. 1,- showing theapparatus for changing the angle of the inclined plane.

For clearness of illustration, the elevatorshaft and portions of theframing have been omitted.

The cable A, supporting the car, passes over a wheel, B, at the top ofthe shaft,down under a wheel, 0, which carries the ordinary elevator ycounter-weight, O, and then up to the top of the shaft, where it is madefast to one of the beams. The counter-weight G, with thisarrangement,moves half the distance traveled by the car. Some form ofspeedgovernor may be employed-for instance, the following: A rod orplunger, D, depending from the bottom of the counter-weight, passesthrough a stuffing-boxin the top of a cylinder, D, and carries at itsend a piston, d, fitting loosely in the cylinder, Fig. 4. The cylinderis to be filled with water or' oil, which retards the motion of theplunger and preventsa too accelerated motion of the car. From the bottomof the counter-weight 0 two cables, E E, pass down to and under rollerse e, suitably mounted in the frame-work, and around the motor-weight Fin the groovesff, and are then fastened to the shaftf, on which theinclined track Gis pivoted. This weight may be of cast-iron, and isformed with the grooves f f and with other grooves, f f which fit therails.

The adjustable inclined track G is pivoted at or near its upper end on ashaft, f, having suitable bearings in the framing. The track may be madeof railroad-iron bent at each end, as shown. Its change of inclinationmay be effected by means of a screw-shaft, H, working in a wheel, H,having a socketed hub, h, provided with a universal bearing, h, whichallows rotary motion and change of angle of the hub. The screw'shaft His pivotally connected at h with the crossbar H of the track to permitthe necessary change of angle, as the inclination of the track isvaried. A rope, I, passing around the screw-Wheel H and around smallpulleys i 15, passes outside of the car up to and over a pulley, L, anddown through the car. The inclination of the track may therefore bevaried by the manipulation of the rope within the car.

A brake-wheel, K, coupled to and revolving with .the cable-pulley B, isprovided with a well-known form of weighted friction-brake,K, pivoted atIt and provided with a rope, 7c,running to the car.

In Figs. 6, 7, and 8 Ihave shown details of an indicating device whichmay be employed. The cable roller B, as well as the brake-Wheel K, turnsloosely upon the shaft. The roller is allowed a slight motionindependent of the brake-wheel,with which it is coupled by a pin, m, onthe roller moving in a slotin the brakewheel. The pin m projects and itsend moves a lever, 11, pivoted on the outer edge of the brake-wheel andprovided with a collar, 0, cmbracing the shaft and working againstanother movable collar, 1), on the end of a lever, q, pivoted at q andprojecting to the front. A cord connected with lever q runs over a smallpulley, q, and carries a weight or bob. The brake-wheel being heldfirmly by the frictionbrake strap, the cable-roller B will carry the pinm to one side or the otherof the slot in the brake-wheel,aoeording asthe weight of the car is greater or less than the counter-weight,andobviously the cord will be held to one side or the other. A personentering the car can therefore tell at a glance from thelateral positionof the cord whether the car has a tendency to move up or down,and byadjusting the track G accordingly by means of the rope I andreleasingthe brake by means of the rope k, which enters the car, the carcan be caused to ascend or descend.

Having presented my invention embodied in one practical form,and withoutlimiting myself to the particular organization or embodiment of theinvention, I claim 1. The combination of an elevator-car, its hoistingmechanism, an adjustable track or inclined plane, and a ear-elevatingweight connected with the hoisting mechanism and traveling on theadjustable track, as set forth, whereby the car may be elevated orpermitted to descend.

2. The combination of an elevator-car, its hoisting mechanism,apivotedadjustable track or inclined plane, a oar-elevating weight conneetedwith the hoisting mechanism and traveling upon said track, and atrack-inclination adj lISiLiHg-IOPB passing through the car,whereby bymanipulation of the ropein the car the inclination of the track may bevaried and the car elevated by the draft of the weight or permitted todescend, as set forth.

In testimony whereof I have hereunto subscribed my name.

EDWARD J. STELLWAGEN.

- Witnesses:

ANSON S. TAYLOR, JOHN J. MALONE.

